<html><head>
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<font face="Arial" size="2"><p align="center"><b><font size="4">ATan()</font></b></p>
<p><b>语法</b></p><blockquote>

Result.f = <font color="#006666"><b>ATan</b></font>(Value.f)</blockquote>

</blockquote>
<b>概要</b><br><blockquote>



Returns the arc-tangent of the specified value. 

 

</blockquote><p><b>参数</b></p><blockquote>
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<table width="90%" class="parameters">
<tr><td width="10%"><i>Value.f</i></td>
<td width="90%"> 
 
The input value. Its range is not limited. 

 

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</blockquote><p><b>返回值</b></p><blockquote>



Returns the resulting angle in radian. It can be transformed into degrees 
using the <a href="degree.html">Degree()</a> function. 

 

</blockquote><p><b>Remarks</b></p><blockquote>



This is the inverse function of <a href="tan.html">Tan()</a>. 
This function can handle <a href="../reference/variables.html">float and double</a> values. 

 

</blockquote><p><b>示例</b></p><blockquote>

<pre><font face="Courier New, Courier, mono"size="2">  <b><font color="#006666">Debug</font></b> <font color="#006666">ATan</font>(1) <font color="#006666">; will display '0.785398' (pi/4)</font>
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</blockquote><p><b>参阅</b></p><blockquote>

<a href="tan.html">Tan()</a>, <a href="atanh.html">ATanH()</a>, <a href="degree.html">Degree()</a> 

</Blockquote><p><b>已支持操作系统 </b><Blockquote>所有</Blockquote></p><center>&lt;- <a href=asinh.html>ASinH()</a> - <a href=index.html>Math Index</a> - <a href=atan2.html>ATan2()</a> -&gt;



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